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Q EXACTIVE HF 高分辨质谱仪 性能参数
| 质量范围（全扫） | m/z 50–6000 (Scan range: last mass ≤ 15 × first mass) |
| 母离子筛选 | 50 < m/z ≤ 400 Any isolation widths between 0.4 amu and full scan 400 < m/z ≤ 700 Any isolation widths between 0.7 amu and full scan 700 < m/z ≤ 1000 Any isolation widths between 1.0 amu and full scan 1000 < m/z ≤ 2000 Any isolation widths between 2.0 amu and full scan 2000 < m/z ≤ 2500 Any isolation widths between 3.0 amu and full scan 2500 < m/z No precursor ion isolation |
| 分辨率 | 15000 at m/z 200 at a scan rate of 18 Hz 30000 at m/z 200 at a scan rate of 12 Hz 45000 at m/z 200 at a scan rate of 10 Hz 60000 at m/z 200 at a scan rate of 7 Hz 120000 at m/z 200 at a scan rate of 3 Hz 240000 at m/z 200 at a scan rate of 1.5 Hz |
| 质量精度 | <3 ppm with external calibration (under defined conditions) <1 ppm using internal standard, lock masses (under defined conditions) |
| 正负切换 | One full cycle in < 1 sec (one full scan positive mode and one full scan negative mode at resolution setting of 35000) |
| 动态范围 | >5000 within a single scan |
| 灵敏度 | S/N of a flow injection of Buspirone for the selected mass chromatogram of the [M+H] + ion (m/z = 386.2551): Full Scan: 500 fg on column 100:1 SIM: 50 fg on column 100:1 |
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